Examples of YDNA Data Tables

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Contents

This is one of a series of articles on Genealogical Methods, prepared in association with The Tapestry. See Index for a list of related articles.
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Using a Similarity Index to Group YDNA Project Results

Discussion

The following table represents a hypothetical example of an FTDNA style table for displaying YDNA test results. In this example results for 8 "kits" are shown, organized into two groups, each group presumably sharing a relatively recent common ancestor based on the similarity of their YDNA signatures. This particular example shows only 12 markers; usually a larger number of markers is used in these tests, though many elect to employ only the minimum 12-marker test. In this example, the values of the markers for the kits in each group are identical. This indicates the possibility that those in the same group share a relatively recent common ancestor. Note, however, that 12-marker tests are highly volative; if the kit owners elected to test additional markers, the probability of a common match might change.

Kit NumberPaternal Ancestor Name/data Haplogroup DYS1*DYS2 DYS3DYS4DYS5 DYS6 DYS7 DYS8 DYS9DYS10DYS11DYS12
Descendants of David Smith of Derry, Ireland
H99990David Smith 1802-1878R1b113251411111312 12 11 13 14 29
H19922Peter Smith 1824-1898R1b113251411111312 12 11 13 14 29
H19922Paul Smith 1828-1888 R1b113251411111312 12 11 13 14 29
Descendants of Phillip Smith of Cornwall, England
H19922John Smith b. 1754 d. Boston MassI214 221410 131411 1411 12 1128
H12032John Smith d1815 OhioI2142214101314 111411 1211 28
H7887Paul Smith b1852 IowaI2142214101314 111411121128
H25431Benjamin Smith I2142214101314 111411121128
H212121John Smith I2142214101314 111411121128

*The "markers" shown here are arbitrary, chosen to simplify the display.

In the above table the probability of a relative recent common ancestor is considered to be....

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